Description

The Base Position feature in the Genome Browser annotations track image shows
the genomic coordinates of the displayed region and -- when zoomed in to the
base level -- the base composition of the sequence underlying the annotation
tracks display. To quickly zoom in to the base level, click the base
zoom-in button. The base button may also be used to automatically
zoom the window to maximize the base display when the image is resized. Click
the arrow to the left of the base display to show the base complement.
To toggle between dense and full display mode, click anywhere on the base
composition line.

In dense display mode, clicking anywhere on the genome coordinate line will
zoom-in the display, centered on the coordinate of the click. The degree of
the zoom may be configured through the Zoom configuration buttons (the default
is 3X). In full display mode, the track shows three frames of translation
when viewed at the base level. Methionines (including potential start codons)
are displayed in green and labeled "M". Stop codons are colored
red and labeled with "*". Codons within or on the boundaries of
gaps, or at the ends of the chromosome, are colored black and labeled
with an "X" to indicate an
error (e.g. a truncated codon). All other codons are shown in alternating
shades of gray to indicate codon boundaries and are labeled by the amino
acids they represent. To view the translation on the reverse strand, click
the arrow to complement the base display.

To add a title to the top of the display browser display image, enter the text in
the Title textbox. To display the name and date of the assembly, check
the Assembly checkbox. To display the position and chromosome, check
the Position checkbox.